1. 你自己說:我們付的是non refundable flat fee. 經別人提醒,我們在網上查了一下,Ethics Opinion 611 prohibits "non-refundable flat fees". And Model Rule 1.16(d) (Texas)provides that “any advance payment of fee or expense that has not been earned or incurred” must be refunded upon termination of employment.
你這個Ethics Rule 和Model Rule都是律師的行規,,要由本地BAR來執行。
2. credit card dispute
這個你可以file一個,http://www.consumer.ftc.gov/articles/0219-disputing-credit-card-charges?
但是具體你有沒有接受到你付費的服務,或者你解雇對方是否符合雇傭合同,這些都是渾水,要弄清楚,可能需要有法律行業知識的人。雖然你可以file dispute,我覺得更有希望的是(1)Local Bar.